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Thread: Puma Viscous Fan Spacer? Improved cooling?

  1. 3rd December 2016, 08:26 PM #11
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    LandyAndy
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    Quote Originally Posted by gavinwibrow View Post
    Maybe I'm misreading this, but isn't the OP saying move into shroud = further away from radiator?
    No Gavin.
    A spacer will move the fan closer to the radiator.
    Now I have seen the pic of the phewma shroud,its a bad idea.
    The fan will find it easier to draw air from the engine side rather than thru the radiator.Not something to mess with.
    Andrew
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  2. 4th December 2016, 11:25 AM #12
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    I can only see it making any difference if there was a purpose made, shortened shroud to go with the spacer. Then it would at least open up a space between the engine and shroud so the airflow has somewhere to go at highway speeds.

    I have considered trimming 10mm or so from the top half of the shroud where it sticks out further than the rest, but the gain would likely be negligible.
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  3. 4th December 2016, 11:45 AM #13
    PAT303
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    My TDCi has endued 50+ degree temps,since when has overheating been an issue?. Pat
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  4. 4th December 2016, 12:00 PM #14
    alittlebitconcerned
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  5. 4th December 2016, 12:20 PM #15
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    Quote Originally Posted by LandyAndy View Post
    No Gavin.
    A spacer will move the fan closer to the radiator.

    Andrew

    G'day Andy. Had a seniors moment and was thinking of electric fans - definitely losing it!
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  6. 4th December 2016, 01:38 PM #16
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    Quote Originally Posted by PAT303 View Post
    My TDCi has endued 50+ degree temps,since when has overheating been an issue?. Pat
    Never had any overheating problem with our TDCI 2.4 so I'd leave it alone.
    Ford has had a lot of experience with these engines and they are a proven design.
    I notice even BAS doesn't require any change to the radiator, only the intercooler, with its 170hp remap, so it must not see engine cooling as a problem.


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  7. 4th December 2016, 04:33 PM #17
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    Interesting thread over on Defender2 about this:
    DEFENDER2.NET - View topic - [For Sale] PUMA overheat? We have the cure!

    Looking at mine, a 2.2, I can't see any benefit of moving it forward apart from room for more airflow if a shorter shroud was developed. Maybe the 2.4 was the problem?

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  8. 4th December 2016, 07:34 PM #18
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    Here's the thread I referred to earlier about fan / shroud depth spacing.

    http://www.aulro.com/afvb/isuzu-land...fan-today.html

    Totally agree with Jilden's comments about fan tip air dispersement.

    The post above looks about right for a fan with no ring around it.

    I used to design windsurfing sails, etc so I do have a bit of a clue.

    cheers, DL
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  9. 4th December 2016, 08:19 PM #19
    PAT303
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    Quote Originally Posted by alittlebitconcerned View Post
    Since 2007
    Well if you haven't serviced it since 2007 I'm not surprised there's a problem. Pat
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  10. 4th December 2016, 08:25 PM #20
    PAT303
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    Quote Originally Posted by Beery View Post
    Interesting thread over on Defender2 about this:
    DEFENDER2.NET - View topic - [For Sale] PUMA overheat? We have the cure!

    Looking at mine, a 2.2, I can't see any benefit of moving it forward apart from room for more airflow if a shorter shroud was developed. Maybe the 2.4 was the problem?

    Sounds like BS to me,the highest coolant temp mines ever shown was 96 degree's towing my camper up north,the claims are up to a 15 degree drop in temps which makes mine 8 degree's under the thermostat opening temp .Sounds like he's designed a band aid solution for a faulty fan or blocked rad. Pat
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